Chemistry Questions Practice Question and Answer
8 Q: Which one of the following is also known as ' wood spirit’s?
1249 05efc069ee824154f4027ad4b
5efc069ee824154f4027ad4b- 1Methyl alcoholtrue
- 2Ethyl alcoholfalse
- 3Ethylene glycolfalse
- 4Glycerolfalse
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Answer : 1. "Methyl alcohol "
Q: Which of the following is the most common kidney stone-forming compound?
1241 05ee85d18c9ddb00b8bda9adc
5ee85d18c9ddb00b8bda9adc- 1Calcium oxalatetrue
- 2Magnesium oxidefalse
- 3Sodium bicarbonatefalse
- 4Magnesium citratefalse
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Answer : 1. "Calcium oxalate"
Q: Which two atoms form an ionic bond? 1167 05b5cc604e4d2b4197774b4b7
5b5cc604e4d2b4197774b4b7- Show AnswerHide Answer
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Answer :
Explanation :
Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another.. This bond generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion. Example :: One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.
Q: A pungent small often present near the urinals is due to
1133 05ef1b1187fed557ba2abd940
5ef1b1187fed557ba2abd940- 1Ammoniatrue
- 2Ureafalse
- 3Sulphur- di-oxidefalse
- 4Chlorinefalse
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Answer : 1. "Ammonia "
Q: Lightest metal is___
1095 05f7465f1a921aa16e68bd6a5
5f7465f1a921aa16e68bd6a5- 1Potassiumfalse
- 2Lithiumtrue
- 3Sodiumfalse
- 4Aluminumfalse
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Answer : 2. "Lithium"
Q: What is the mass number of an element, the atom of which contains two Protons, two neutrons and two electrons?
1045 05ee35e7455d51a0f6482cd3c
5ee35e7455d51a0f6482cd3c- 12false
- 24true
- 36false
- 48false
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Answer : 2. "4 "
Q: Which of the following is the lightest element in the universe?
1021 05f06dcb83f7f07047795e462
5f06dcb83f7f07047795e462- 1Nitrogenfalse
- 2Siliconfalse
- 3Heliumfalse
- 4Hydrogentrue
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Answer : 4. "Hydrogen "
Q: Percentage of lead in lead pencil is:
1012 05ed62769436d8a49583c61d8
5ed62769436d8a49583c61d8- 1zerotrue
- 220false
- 380false
- 47false
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